Abstract

Kinetic analysis of ribozyme reactions is a common method to evaluate and compare activities of catalytic RNAs. The hairpin ribozyme catalyzes the reversible cleavage of a suitable RNA substrate at a specific site. Hairpin ribozyme variants as an allosteric ribozyme responsive to flavine mononucleotide and a hairpin-derived twin ribozyme that catalyzes two cleavage reactions and two ligation events with the result of a fragment exchange have been developed by rational design and were kinetically characterized. Herein, protocols for preparation of ribozymes and dye-labeled substrates as well as for analysis of cleavage, ligation, and fragment exchange reactions are provided.

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